System extension cannot be used
The system extension “/Library/Extensions/AppleHDA_ALC255.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.
this error occurred...

Replaced EFI folder with EFI_4184.zip
And clover Folders Files with 5558_920M-Disabled_A14.zip
And booting try with VBoxHFS and without VBoxHFS [by Removing VBoxHFS]
but error is still there "system uptime in nanoseconds : xxxxxxxx"

Hey Crew,
I tried 5558_HD6000_Disabled-920m_A.zip bootpack but there is some problem(it won't show pendrive) after some modification in config.plist it works like magic and everything is working only [Audio and WiFi problem]. I think Audio will be fix after reboot.
but now problem is wont boot after first reboot that and error is "system uptime in nanoseconds : xxxxxxxx"
Please help me...
config file : https://docs.google.com/uc?export=download&id=0B-trGQsYQ9Gvd19SOEItXzlmUlk
Dell insprion 5558
Cpu: intel i5 5250U
Ram: 8gb
SSD: 220gb
Gpu: intel hd 6000 / nvidia 920m 2gb
Sound: realtek hd